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For customization, think RYOKUSEISHA!

In our pursuit of maximum user convenience, we offer customization for various products, including aids to navigation and buoys—and we welcome full custom orders. Contact us today for a free consultation.

New Product

New Product Announcement

Recommended for wave-dissipating blocks marking and quay lighting.

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Product Pick-Up

Compact, Lightweight, and Cost-Effective—Your Go-To Easy-to-Use Marine Beacon.

About RYOKUSEISHA

RYOKUSEISHA is a comprehensive manufacturer of aids to navigation, radio buoys, and satellite buoys.
Since our founding in 1956, we have contributed to fisheries’ efficiency and maritime safety as an industry pioneer, which includes developing the world’s first radio buoy for commercial fishing. In recent years, we have continued to evolve by addressing emerging demands, such as implementing safety measures for offshore wind power facilities.
Moving forward, we will carry on the venture spirit of our founding days, continuing to develop innovative products and information services that benefit society.

To meet the diverse needs of our clients, product customization is our standard practice.
We deliver optimized products tailored to the specific meteorological and oceanographic conditions of the deployment area, regulatory requirements, and various other requests.

Aids to Navigation(Sea Light)

“Sea Light” is the generic name for the Aids to Navigation in our company.

We offer a wide range of marine aids to navigation (lighted buoys and beacons) for diverse sectors:

  • Harbor construction & civil works
  • Marine research & surveys
  • Fisheries & aquaculture

*Product bodies shown are representative examples.

Fishing Equipment

As part of our location tracking systems, we provide various satellite buoys and monitoring systems for small vessels, all equipped with our proprietary, in-house developed software.
Additionally, our light buoys for fisheries and aquaculture can be fully customized to meet your specific deployment conditions and requirements.

Please feel free to contact us

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